US2967434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oscillating system excited at or in the neighbourhood of resonance
Assignee: Individual
•
Filing: 1956-12-21
•
Granted: 1961-01-10
•
Expires: 1976-12-21
Abstract
No abstract record available.
Inventors
- 👤 Mahlfeldt Walter
- 👤 Schweinfurth Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:04
CPC Classifications
B; B65; B65G; B65G27/00; B65G27/10; B65G27/28; B65G27/30; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18544; Y10T74/18552
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2729332A
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US2746598A
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US2713415A
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US2814379A
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US2756601A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-10 | 1964-07-11 | 1965-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-10 | 1968-07-11 | 1969-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-10 | 1972-07-11 | 1973-01-10 | $7700.00 | Window Closed / Lapsed |